Epson Stylus C40UX Service Manual page 39

Stylus C40UX/C40SX/C20UX/C20SX
Flashing
This printer performs the following two kinds of the Flashing for the following
purpose.
Periodical Flashing
This is due to avoid the increment of both ink's viscosity in the printhead
nozzle during the continuous printing and the specific small amount of the ink
is ejected in the cap based on the periodical flashing timer.
Periodical large amount Flashing
This is due to avoid the increment of black ink's viscosity in the printhead
nozzle during the continuous printing and large amount of the ink is ejected in
the cap based on the periodical large mount flashing timer.
Operating Principles Overview
Revision B
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